Experimental Physics and
Industrial Control System

Peregrine McGehee <[email protected]> · Fri, 9 Apr 2004 08:29:20 -0600 (MDT)

Back to EPICS history (I've seen this happen in another context
where nuggets of interesting information are periodically
"rediscoverd" within a large scale collaboration) -

The February 2003 posting generated a discussion on the use of
PUTF under the "Bi-directional PV" thread, however, a search
on PUTF places the first mention of this technique on
17 September 1998 by Fritz Bartlett (FNAL). Also note the
suggested use of "dbGetFieldIndex".

>
>  A possible alternative appears to be setting the "process passive"
> attribute for the field and then, during record processing, using the
> value in the PUTF field, which indicates when a dbPutField caused
> record processing, and the dbGetFieldIndex function to determine which
> field is associated with the action. This, however, feels to me like a
> "hack" to handle a "special" action in record processing.

- Peregrine

-- 
Peregrine M. McGehee	Department of Astronomy
New Mexico State University, Las Cruces, New Mexico

Experimental Physics and Industrial Control System

Experimental Physics and
Industrial Control System